| Date: | 25–31 March |
| Edition: | 22nd |
| Surface: | Clay / outdoor |
| Venue: | Tennis Club Napoli |
| Location: | Naples, Italy |
| Champs: |  Luca Nardi |
| Champd: |  Guido Andreozzi /  Miguel Ángel Reyes-Varela |
| Before Year: | 2022 |
The 2024 Tennis Napoli Cup was a professional men's tennis tournament played on outdoor clay courts. It was the 22nd edition of the tournament, and part of the 2024 ATP Challenger Tour. It took place at the Tennis Club Napoli in Naples, Italy from 25 to 31 March 2024.
See main article: 2024 Tennis Napoli Cup – Singles.
Luca Nardi def. 
Pierre-Hugues Herbert 5–7, 7–6(7–3), 6–2.See main article: 2024 Tennis Napoli Cup – Doubles.
Guido Andreozzi / Miguel Ángel Reyes-Varela def. Théo Arribagé / 
Victor Vlad Cornea 6–4, 1–6, [10–7].| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Argentina | Federico Coria | 87 | 1 | |
| Italy | Luca Nardi | 96 | 2 | |
| Maximilian Marterer | 102 | 3 | ||
| Italy | Fabio Fognini | 103 | 4 | |
| France | Corentin Moutet | 107 | 5 | |
 Hungary | Zsombor Piros | 108 | 6 | |
| Italy | Matteo Gigante | 149 | 7 | |
| France | Pierre-Hugues Herbert | 160 | 8 |
The following players received wildcards into the singles main draw:
Raúl Brancaccio Enrico Dalla Valle Francesco MaestrelliThe following player received entry into the singles main draw using a protected ranking:
The following player received entry into the singles main draw as a special exempt:
The following player received entry into the singles main draw as an alternate:
The following players received entry from the qualifying draw:
Mathias Bourgue Evan Furness Arthur Gea
Michael Geerts Manuel Guinard Samuel Vincent RuggeriThe following player received entry as a lucky loser:
